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Finding the Fourth Proportional to 489,089.20, 683,325.20 and 489,089.20

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Solution

The fourth proportional to 489,089.20, 683,325.20 and 489,089.20 is: 683,325.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,089.20 : 683,325.20 = 489,089.20 : x
  2. Step 2: Convert to fraction form
    489,089.20/683,325.20 = 489,089.20/x
  3. Step 3: Cross multiply
    489,089.20x = 683,325.20 × 489,089.20
  4. Step 4: Simplify right side
    489,089.20x = 334,206,975,407.84
  5. Step 5: Solve for x
    x = 334,206,975,407.84/489,089.20
  6. Step 6: Final answer
    x = 683,325.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.